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US 5,391,245 AGranted
Fire-resistant building component
OwnerTerry A. Turnerinventor
Life of this patent
Estimating the term…
Abstract
A method of, and compositions for, the making of a fire-resistant door core assembly. Doors produced from the door core assemblies. In the making of a door core assembly, an aqueous slurry containing gypsum cement and diatomaceous earth is prepared. The slurry may also include expanded mineral ore material and Portland cement. The slurry preliminarily hardens during a green cure stage.
Claims13
A method of preparing a fire-resistant panel comprising:
- preparing an aqueous slurry of fire-resistant particulate material and water with the slurry being spreadable in a mold to produce a layer of slurry,
- the slurry being prepared with a major portion of the particulate material consisting of gypsum cement and diatomaceous earth whereby the slurry is hardenable in a green cure stage to permit handling,
- spreading the slurry in a mold and forming a layer of the slurry within the mold,
- permitting the slurry to .harden during a green cure stage and with such hardening to form a slab from the slurry, and then permitting the slab to finally cure and harden to produce the panel.
1 more element
In the manufacture of a panel, the method comprising:
- preparing an aqueous slurry having a solids content composed of a particulate siliceous material and a particulate inorganic cementitious material, the cementitious material including gypsum cement and the siliceous material including diatomaceous earth,
- layering out the slurry as a layer on a horizontal support surface and permitting the layer without compression-removal of water to harden during a green cure stage to form a slab, and
- after hardening during a green cure stage, transporting the slab and permitting the transported slab to additionally harden during an additional curing stage.
A method of making a door core assembly comprising:
- preparing a rectangular frame of fire-resistant members extending in a rectangular course and the frame bounding an interior void region,
- preparing an aqueous hardenable slurry of fire-resistant solid materials,
- introducing the slurry to the interior void region bounded by said frame, and with the frame functioning as a mold confining the slurry, permitting the slurry to harden while occupying the interior void region, the hardened slurry and frame then becoming a unitary member, and
- applying facing sheet material to each of opposite sides of this unitary member with the material covering the hardened slurry and the frame which bounds the hardened slurry.
1 more element
Dependencies are inferred from the claim text.